Purchased at an Estate Sale and does not have any players signatures. The only person who knows the real story passed away but according to Google Lens this is likely from the event listed below. I am not sure how reliable Google Lens is but here is the cut and paste from that search:

The image shows a baseball commemorating the 1999 World Series, where the New York Yankees played against the Atlanta Braves. Additional information:

It is an official Rawlings Major League Baseball.

The text on the ball reads "Triple Crown FINALIST."

Rawlings has been the official supplier of baseballs to the Major Leagues for over 40 years.

A regulation baseball's circumference is 9 to 9.25 inches and weighs 5 to 5.25 ounces.

The cover is made of two pieces of leather stitched together with red thread.

Rawlings was acquired by Seidler Equity Partners and MLB Properties in June 2018.

Since normal MLB balls go for $25-$30 unsigned, I am listing this one at the same relative price.